Gemini 3.1 Pro vs GPT-5.4 Pro
Wins 1 of 5 areas
Following instructions
Wins 3 of 5 areas
Agents · Reasoning · Math
GPT-5.4 Pro is the stronger all-rounder.Gemini 3.1 Pro is cheaper and better at following instructions.
Scores updated · 17 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- MathCompetition and research-level math02GPT-5.4 Pro2 of 2 tests
- ReasoningHard problems that need careful thinking12GPT-5.4 Pro2 of 4 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own01GPT-5.4 Pro1 of 1 test
- Following instructionsDoing exactly what it is asked10Gemini 3.1 Pro1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
Agents and following instructions rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Gemini 3.1 Pro costs 93% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where GPT-5.4 Pro pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+31.7points ahead
- Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+22.8points ahead
- Research-level physics problemsCritPt+12.3points ahead
Where Gemini 3.1 Pro pulls ahead
- Short factual questions, answered correctlySimpleQA Verified+27.2points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+4.3points ahead
- Keeps track of context across a multi-turn chatMulti-Challenge+2.2points ahead
Every test, side by side
All 17 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningGPT-5.4 Pro
- CritPtGPT-5.4 Pro by 12.317.730+12.3
- ARC-AGI-2GPT-5.4 Pro by 6.277.183.3+6.2
- Humanity's Last ExamGemini 3.1 Pro by 4.34742.7+4.3
- GPQA Diamondtie94.194.4tie
FactsEven
- SimpleQA VerifiedGemini 3.1 Pro by 27.273.546.3+27.2
- Vectara HHEM hallucination ratelower is betterGPT-5.4 Pro by 2.110.48.3+2.1
MathGPT-5.4 Pro
- FrontierMath Tier 4GPT-5.4 Pro by 31.726.858.5+31.7
- FrontierMath Tiers 1-3 (v2)GPT-5.4 Pro by 22.859.682.5+22.8
Following instructionsGemini 3.1 Pro
- Multi-ChallengeGemini 3.1 Pro by 2.271.469.2+2.2
Other results7 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- frontiermath_tier_4_v1GPT-5.4 Pro by 20.816.737.5+20.8
- HLE (with tools)GPT-5.4 Pro by 7.351.458.7+7.3
- vectara_avg_summary_lengthGPT-5.4 Pro by 40.8 rating points107.7148.5+40.8 rating
- ARC-AGI-1Gemini 3.1 Pro by 3.59894.5+3.5
- vectara_factual_consistencyGPT-5.4 Pro by 2.189.691.7+2.1
- Finance AgentGPT-5.4 Pro by 1.859.761.5+1.8
- vectara_answer_ratetie99.4100tie
Questions people ask
Which is better, Gemini 3.1 Pro or GPT-5.4 Pro?
GPT-5.4 Pro wins three of the five areas where both have results: agents, reasoning and math. Gemini 3.1 Pro wins following instructions, and costs 93% less. They are level on facts.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; GPT-5.4 Pro costs $30.00 and $180.00. That makes Gemini 3.1 Pro about 93% cheaper for the same work.
How do you compare the two?
We use the 17 benchmark tests both models have published scores on. The verdict counts the 10 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 7 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.